Abstract
BACKGROUND: Abdominal cocoon is a rare peritoneal lesion and is difficult to diagnose because of its lack of special clinical manifestations. Until now, there is no case report of abdominal cocoon combined with cryptorchidism and seminoma. CASE PRESENTATION: A case of abdominal cocoon with cryptorchidism and seminoma was diagnosed and treated in our hospital. The patient had no symptoms except occasional abdominal pain. He underwent laparoscopy because of bilateral cryptorchidism and seminoma in the right testis. During the surgery, he was diagnosed with abdominal cocoon due to the thick fibrous tissues which was tightly adhered and encased part of intestine like a cocoon. Enterolysis and bilateral cryptochiectomy were performed after the diagnosis and nutritional and symptomatic support was provided after the surgery. The patient recovered well and was discharged soon. The postoperative pathological examination confirmed the presence of bilateral cryptorchidism and seminoma in the patient's right testis. CONCLUSION: There are only a handful of cases where a patient has both abdominal cocoon and cryptorchidism. Since the etiologies of both diseases remain unknown, further research is required to investigate effective diagnosis and treatment for the diseases and explore the potential connection between the two diseases.